The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 20-40mm F2.8 VXD and the Tokina 11-18mm F2.8 ATX-M for their suitability to various photography scenarios:
Size and Weight Comparison The size of a lens is a crucial factor to consider when comparing two lenses. Tamron 20-40mm F2.8 VXD is the longer of the two lenses at 86mm. The Tokina 11-18mm F2.8 ATX-M with a length of 71mm, is 15mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 74mm.
Below you can find a scaled side-by-side image of Tamron 20-40mm F2.8 VXD and Tokina 11-18mm F2.8 ATX-M to get a better idea of how their sizes compare in real life.
Comparison image of the Tamron 20-40mm F2.8 VXD and the Tokina 11-18mm F2.8 ATX-M Size and Weight The weight of a lens is equally significant as its external dimensions, particularly if you intend to handhold your camera and lens combination for extended periods. Tokina 11-18mm F2.8 ATX-M weighs 335g, 8% (30g) lighter than the Tamron 20-40mm F2.8 VXD's weight of 365g.
Below you can find the dimension and weight table of the Wideangle Zoom Lenses in Sony E Mount for size comparison purposes.
Wideangle Sony E Mount
Filter Threads
Both the Tamron 20-40mm F2.8 VXD and the Tokina 11-18mm F2.8 ATX-M have the same Filter thread size of 67mm .
Below are links to the 67mm filters that we recommend you to consider for these lenses:
Lens Mounts
Both the Tamron 20-40mm F2.8 VXD and the Tokina 11-18mm F2.8 ATX-M has the same Sony E lens mount . Some of the latest released cameras that are compatible with the Sony E lenses are Sony FX5 , Sony A7R VI and Sony A7 V .
Focal Range
Tamron 20-40mm F2.8 VXD has a focal range of 20-40mm and
2.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
30 - 60mm .
On the other hand, the Tokina 11-18mm F2.8 ATX-M has a focal range of 11-18mm and 1.6X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 16.5-27mm when used on a APS-C / DX format camera.
